I can't see the forest for the trees.... or similar!!! I'm new to app_rpt and in the process of installing (learning) the hardware and software..starting with something simple I thought.. This is for remote base not a repeater. I have the DMK URI and the XIPAR distro installed. When using IAXRPT I don't hear any receive audio.. transmit is fine both through the client and CLI.. For example *80 I can hear the cw id both on the client and over the air. I am using the speaker conx on an IC28H wired to Mic-in (Pin 9) on the URI. I believe the wiring is ok because I move the URI to a Windows system and using MMVARI I can see waterfall activity when listening on the APRS freq. I don't have test equipment unfortunately. Using my best 1000Hz whistle on a handheld I got rxvoice to "success"??. I've tweaked various settings in usbradio.conf (ie rxdemod=speaker) but still no joy. Now it's probably something obvious but what??? Like I say it's hidden in the forest somewhere.. So any clues for the clueless would be appreciated. Bill ve7qc